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Related Concept Videos

Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

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The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
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Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

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This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
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Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

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Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
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Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
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Endoscopic Procedures III: Video Capsule Endoscopy01:28

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Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers,...
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Lower GI Series: Barium Enema01:23

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A Barium Enema, or a lower GI series, is a specialized radiographic examination designed to visualize the lower gastrointestinal tract, specifically the colon and rectum. This procedure is instrumental in diagnosing various conditions such as colorectal cancer, polyps, diverticulosis, and inflammatory bowel disease.
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Assessment of the Rectum and Anus01:25

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Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
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Related Experiment Video

Updated: Apr 15, 2026

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
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Water-aided colonoscopy.

Joseph C Anderson1

  • 1Department of Veterans Affairs Medical Center, Department of Medicine, 215 North Main Street, White River Junction, VT 05009, USA; The Geisel School of Medicine at Dartmouth Medical, Department of Medicine, Hanover, NH 03755, USA.

Gastrointestinal Endoscopy Clinics of North America
|April 4, 2015
PubMed
Summary
This summary is machine-generated.

Water-aided colonoscopy aids endoscopists in navigating challenging colons during colonoscopy. This technique, involving water infusion and suction, improves cecal intubation for complete mucosal inspection.

Keywords:
Adenoma detectionColonoscopySedationWater immersionWater infusion

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Area of Science:

  • Gastroenterology
  • Endoscopy

Background:

  • Successful cecal intubation during colonoscopy is crucial for complete mucosal inspection.
  • Challenging colonic anatomies, such as severe angulation or redundancy, can impede colonoscope insertion.

Purpose of the Study:

  • To review the technique, effectiveness, safety, and applications of water-assisted colonoscopy.
  • To highlight its utility in managing difficult colonic anatomies.

Main Methods:

  • Water-assisted colonoscopy involves water infusion without air, followed by suction.
  • The technique can be applied during insertion (exchange) or withdrawal (immersion/infusion).

Main Results:

  • Water-assisted colonoscopy can facilitate navigation in anatomically challenging colons.
  • The review covers the technique's effectiveness, safety profile, and use in sedationless endoscopy.

Conclusions:

  • Water-assisted colonoscopy is a valuable tool for improving cecal intubation success.
  • It offers a potential solution for challenging colonoscopies and may support sedationless procedures.